Refrigeration system



FIG. 1 illustrates a front view of a refrigeration system, according to one embodiment of the present invention;

FIG. 2 illustrates a side view of the refrigeration system illustrated in FIG. 1;

FIG. 3 illustrates a perspective view of the refrigeration system illustrated in FIG. 1; and,

FIG. 4 illustrates a front view of a refrigeration system, according to a first alternative embodiment of the present invention. 

The ornamental design for a refrigeration system, as described and shown in FIGS. 1 through 4, inclusive. 